"NECT: single to multiple nodules of increased attenuation localised to the grey/white matter junction; variable oedema and frequent intratumoural haemorrhage present"
"CECT: nodules typically enhance; dural-based, well-enhanced lesions are impossible to differentiate from meningiomas"
"T1: typically hyperintense secondary to haemorrhage or melanin (as above)"
"T2: typically hypointense"
"T1 C+: typically enhances in a peripheral rim pattern or a diffusely heterogeneous pattern"
"SWI/T2*: susceptibility artifacts are commonly encountered secondary to haemorrhage (they are not related to melanin content which does not have a strong diamagnetic effect) 12,14"
"Melanoma metastases can be artificially divided into "melanotic" (containing greater than 10% melanotic cells on histopathology) or "amelanotic" (containing less than 10% melanotic cells). In 1995, Isiklar et al. published a study in the AJR where only melanotic metastases provided consistent and reliable MR findings (hyperintense on T1 and hypointense on T2). The MR findings of amelanotic metastases were non-specific. Unfortunately, melanotic metastases made up only 25% of the total cerebral melanoma metastases examined 7."
"Melanoma metastases can be artificially divided into "melanotic" (containing greater than 10% melanotic cells on histopathology) or "amelanotic" (containing less than 10% melanotic cells). In 1995, Isiklar et al. published a study in the AJR where only melanotic metastases provided consistent and reliable MR findings (hyperintense on T1 and hypointense on T2). The MR findings of amelanotic metastases were non-specific. Unfortunately, melanotic metastases made up only 25% of the total cerebral melanoma metastases examined 7."
"SWI/T2*: susceptibility artifacts are commonly encountered secondary to haemorrhage (they are not related to melanin content which does not have a strong diamagnetic effect) 12,14"
"These patients can commonly present with headaches, seizures, mental status alterations, ataxia, nausea and vomiting, and visual disturbances. However, 10% of patients may be asymptomatic."
"NECT: single to multiple nodules of increased attenuation localised to the grey/white matter junction; variable oedema and frequent intratumoural haemorrhage present"
"CECT: nodules typically enhance; dural-based, well-enhanced lesions are impossible to differentiate from meningiomas"
"haemorrhage into primary brain tumour (e.g. glioblastoma)"